Summer is in full power here in Kerala, India. Concrete radiating heat and rooms are hot even at night.
Have seen people mention things like blackout curtains, reflective or white paint on the roof etc.
Have upped hydration and am now sleeping with windows open, with a mat on the floor.
What all things do the people in your locality do? Or if you have any specific insight into cost-effective techniques or so, could you kindly share them?
Thanks in advance


I grew up somewhere where it didn’t cool down a lot at night and the only solution was to sleep in front of a fan. Sometimes I could get the fan to blow directly into the sheets and sort of balloon them out which was pleasant.
Where I live now it cools at night so I can open the windows at night and close them up during the day. Sometimes I close the curtains too if it will be extreme. I open the windows and create a cross draft when it cools down.
Those ice/fan pseudo a/c setups don’t work well.